technical process


Aerobic compost Anaerobic digestion Dry incineration Dry landfill Drying + high temperature oxidation
Technical applicability Only limited to organic hazardous substances and heavy metal-rich sludge rich in organic matter Applicable to some sludge rich in organic matter Suitable for domestic sludge and ordinary industrial sludge, it needs to be accepted by suitable thermal power plants and industrial kilns Applicable to all sludge, large land area, and potential hazards of secondary pollution

Suitable for domestic sludge and most common industrial sludge and industrial hazardous waste, dry slag is easy to be recycled


Large About 1/2 of the aerobic compost About 1/5 of aerobic compost The floor space increases year by year Smallest footprint
Management operations general general high degree of automation Average degree of automation

high degree of automation

Sludge outlet after disposal

According to the buyer’s demand for sludge fertilizer, it is more complicated According to the buyer, it is more complicated Finished products are sent to thermal power plants and industrial kilns Send to landfill, far away

Can be purified on-site, use of building materials, or thermal power plants, landfills

Sludge main outlet reliability

More difficult general reliable Reliable, limited by land


Other ways of sludge

Land consumption (without fertilizer production) Land consumption Fertilizer, land consumption, alternative energy Fertilizer (perishable, not easy to store), land consumption, alternative energy (high water content, limited incinerator)

Flexible use

Resource recycling

Sell rotted mud as fertilizer Partially recovered biogas heat energy can be used as medium soil Thermal power plants burn energy and can also be used as alternative energy N/A

Recycling dry slag heat energy and liquid organic substances, oil products, can also be used as raw materials for building materials products

Secondary pollution

Need to strictly control odor pollution The water content of the sludge is high, so it is necessary to pay attention to the environmental pollution caused by the transportation loss N/A N/A


Limitation factor Heavy metals, pathogens Heavy metals, pathogens There are basically no special requirements, the calorific value requirements of the dried products Basically no special requirements

Basically no special requirements